This will have the main jet supplying the fuel, and read the plug again. I've been running my '68 Bug with the X127.5 main jet in the smaller carburetor, and he's running a tad rich. following topics related to the 30 PICT/2 and 3 and 34 PICT/3 and 4 The main carburetor jets fit stock Brosol and Solex VW Carburetors as well as the EMPI stock replacement VW carburetors (28, 30 & 34PICT carburetors). I remove the top of the carburetor, then run a thin screw driver (which avoids the coil) through the plug hole to get to the jet. The air correction jet has the emulsion tube attached to it -- this "foams" the fuel before it's added to the airstream in the throat. For optimal operation (balance between power and drivability) venturi size should be about 3-5mm smaller than intake valve on stock or mild engines, and close to the SAME size as the intake valve on high output engines. I don't think you'd honestly notice the difference. (Adapted from John Connolly's article on How to Jet Your Carburetor. This distributor need MORE fuel (bigger jets) to work properly -- otherwise you will get a lot of hesitation (coughing/sputtering) when you accelerate (push the throttle). Choke vacuum diaphragm (38) The standard jetting that the 30PICT/1 & 2 carburetors came with is size X122.5 or X125 main, size 55 idle, and size 125Z air correction jets. The effect is clearly noticeable from 3000 RPM upwards (just under 60 mph), and probably a little lower than that. In both cases, when running the 009 distributor, set the accelerator pump for maximum squirt. The last three carburetors are more sensitive, and so the lack of vacuum advance on the 009 makes more of an impact. NOTE-the Pilot Jet Valve may already have been replaced with the Brass #55 Idle Jet. Posted: Tue Nov 06, 2018 11:47 am Post subject: Re: Solex 34 pict 3 1835cc. The power jet sticks straight out to the side, and sits in a protrusion nearer the top of the carburetor - if you remove that jet you can see a drilling straight through the carburetor body to the air correction jet/emulsion tube where the the main fuel supply is delivered into the throat of the carburetor. All three of these jets can be changed. The optimal stiochiometric (balanced) ratio is 14.5:1 -- that is, 14.5 parts air to one part fuel. This carburetor will NOT work well with cams with over 270 duration, (same as the stock 34-3 carb). In these later models, you can easily change the jet with a medium screwdriver either with the top of the carburetor removed or with the carburetor completely off the car. We disassemble the carburetor, and bore the venturi to 28mm for more air! 55 idle is fine. I would think you would need a .55mm-.60mm idle jet, and a .60 pump jet. The center electrode should look quite clean and grey/white. The power jet is needed to correct a tendency for the air correction jet to work TOO well at max airflow - it leans the mixture off too much and the power jet corrects this. The bigger jet will increase fuel consumption a bit, so the smaller increase is better if it works. Float needle valve and gasket (4 & 5) (See note below.) There should be a light smooth coating of carbon on the rim of the threaded part, and a colour change on the outer electrode of grey (at the tip) to black (where it attaches to the rim of the threaded part), with the change of colour on the corner of the bend. With the richer 125Z air correction jet I got 11.8 km/l (27.9mpg) -- no real difference. I'd avoid Chinese stuff on eBay. Main jet sizes run through a range from X110 to X150 (1.1 - 1.5mm diameter). Rob responded - A X120 main jet would make it run leaner, and it sounds like it is too lean already. Remove the main jet (as above) and blow through it (check for crud in the float bowl at the same time). We need to do some research regarding the adjustable main jet. That's fine for modern cars with engine computers which can adjust the mixture on-the-run, but what about our old fixed-jet carburettors? Check the float valve for binding and leakage. The H30/31 is the largest carburetor you can use with the normal single-port manifold. (You must log in or sign up to reply here. SUPER-STOCK-34-3. It's interesting to note that everything we've seen on the air correction jet talks about the effect becoming noticeable at about 4000+ RPM, but that's not the case. Take the car for a run at a modest speed - say 35-40mph. Nothing is exactly that linear of course as the jets are all different sizes, but maybe it helps visualise the problem of keeping the fuel flow balanced at different rpm/airflows. Run about 100 miles and then look at the tail pipe. That's how I got mine! For example, when used on a 1300cc engine with a vacuum distributor, the H30/31 should usually have a main jet of X122.5 and an air correction jet of about 140Z; but when used in a 1600cc single port engine, it should have a 125 main jet and a 125 or 130 air correction jet. Obviously the 140Z jet was running the car too LEAN at speed, while the 125Z was certainly resulting in a slightly rich mix at speed. any input would be much appreciated. Ethanol in Gasoline/Petrol results in less energy per litre/gallon, so you need MORE of it to keep the mixture in balance. The only method of getting it exact is to run the car on a dynomometer with an exhaust gas analyser in the exhaust pipe. (Solex jets are marked with the hole size in mm, so a X127.5 jet has a 1.275mm hole - I'm not sure what numbering method Mikuni use). A clean plug with a light grey/tan look means the mixture is about right. All this indicates a good mixture and correct heat range. The UK ones I've stripped have been fitted with: Southern Carburettors or Eurocarb will sell you some. 34 PICT Carburetor Combination, Automatic Choke Discussion and Adjustment Procedure. by vwlover77 Fri May 05, 2017 6:58 pm. The venturi sizes listed below are the sizes supplied by Weber in new carburetors. You can email to cancel un-shipped/un-paid items at any time as long as they are not direct-shipped, special order or made/machined-to-order. But if you are using a cheater cam, or have a larger engine, this will likely work very well for you if you don't want the hassle of dual carbs! The performance would tell you some of the answer, but inexperienced folks using one might get themselves into trouble where using a fixed (normal) jet and changing it for a larger or smaller one would give you a known change in fuel flow. The idle jet is usually a size 55 (when the main jet is normally a size X125 or X127.5) but it might be a size 65 if the main jet is a X122.5 or smaller. The 30PICT/2 carburetor has a fuel idle cut-off in the right side of the carburetor but the 30PICT/3 and the H30/31 should have an air idle cut-off in the left side for the carburetor (same as the larger 34PICT/3) -- that was part of the change to the /3 carburetor version -- moving the idle cutoff valve to the left side. Jetting With the Centrifugal-Advance (009) Distributor, Tuning the 009 Distributor/ 3. PRICES are subject to change without obligation. Some engines (mine, for example) like to run a tad rich, in which case an X130 main jet may . I managed only 22 mpg on a highway (around 50-55 mph), and 19 mpg when I was driving around 60-65 mph. The smaller jets WILL NOT work with the 009 distributor. . Assuming a vacuum distributor, the 34PICT/3 carburetor is usually jetted with a X127.5 main jet, and 100Z -120Z air correction jet. The 30PICT/3 and the H30/31 carburetors came with size X112 main (super lean), size 65 idle, and size 125Z air correction jets, which made them very difficult to tune. The carburetor has a 55 idle, X125 main and 125 air correction jet. With the idle cut-off valve working correctly, hot spots in the cylinders don't occur as readily, since there is no fuel available to keep the engine running once you turn off the ignition. On the twin port engines, it has to be used with a 30/34 adaptor, since the twin port manifold has a larger mounting flange than the single port manifold. Checking and adjusting cold idle speed =>page 22-53 Throttle valve positioner The 1200cc engines usually used a X120 or X122.5 in the 28PICT carburetors, the 1300cc engines used either X122.5 or X125 in the 30PICT carburetors, the 1500cc engines usually used a X125, and the 1600cc engines usually need a X127.5 in either 30PICT, H30/31, or 34PICT, but MIGHT get away with an X125 in the smaller 30PICT and the H30/31. Please only continue if you are prepared to be PATIENT. Bentley (page 20 of the 'fuel' section -- table of 'carburetor setting and jets') says the X130 was normal for '71-'72 34PICTs, and X127.5 was normal for '73-'74s (non-California models). The idle cut-off valve sticks out the left side of the carburetor on H30/31 and 34 sries carbs (but on the right side on 30PICT series) and has an electrical connector on the end. A sooty plug means the idle jet might be a little large. If it is any lower the choke may be staying on too long, or it may be stuck on and won't open at all. Carburetor-to-intake manifold gasket. We can only give a guide here, as engine age, type of fuel, carburetor wear, etc. Jun 10, 2013 (Edited) cactu4r said: I've got a recently rebuilt 1600 DP, 34-pict-3, DVDA, and I am having the hardest time getting the engine to idle. VW set up a vacuum advance distributor, and the stock jetting in a 34 pict 3 for a 100% stock engine. Solex Carb Spacer for Alternator, 30 PICT Carburetors, 00-3245- Using a new gasket, install the carburetor on the intake manifold flange. Rob provided further explanation: The idle circuit is behind the main jet - the fuel flows THROUGH the main jet to get to the idle circuit. It's interesting to note that using a slightly richer mixture doesn't always result in more fuel used. Do you know what size high speed jet you have? If your car is having a problem with spitting/sputtering/cracking, this is an indication of the fuel/air mixture being too LEAN. So if you get a "too small" jet it's easy to drill out with the right sized drill, but if you get a "too large" jet it's not so easy. The numbers are: 231 168 015, and 043 905 205 L in the second line. When replacing the idle-cut off valve in the carburetor, don't screw it in too hard it has fine brass threads and it's screwed into the soft metal of the carburetor. Carburetor Reassembly On later carburettors which have the cut-off solenoid in the left side, the idle jet and the power jet are similar looking jets on the right side. (See our Automatic Choke Discussion and Adjustment Procedure.). Ethanol contains USED oxygen which canoot be burnt again, so adding ethanol to gasoline/petrol, reduces the amount of energy per litre/gallon. It is very easy to check the idle cut-off valve to make sure it is functioning properly. (Some of this material was adapted from John Connolly's article on How to Jet Your Carburetor.). Following that is a listing of the parts, giving Be sure to check your engine's fuel pressure and ignition system. Currently our response time to emails is slow (we are severely short-staffed). Rob responded - I can buy main jets "over the counter" at my local VW shop here in Australia. The valve on the Pierburg carburetor has a spring-loaded ball bearing on the end; it is likely that the valve in your kit does not. While it is necessary to enrichen the fuel mixture when running an 009 distributor, you don't want the any richer than necessary since it will use more fuel. The effect is not linear though, so as the airspeed increases, the main jet will start to deliver a richer mixture (too much fuel), so the air correction jet is needed to add air and stop the mixture going over-rich, then the air correction jet starts working too well at higher airflows (engine revs) so the Power Jet (Aux jet) is need to add more fuel again. The 137.5Z air correction jet is too big -- it's letting in too much air. But engine sizes have much more variation, 1200cc to 1300cc is about 8% more, 1300cc to 1500cc is nearly 14% more, and 1500cc to 1600cc is about 7% more. Dave jetted his new carburetor as follows: main jet - X130; idle jet - 55; air correction jet - 80Z. . E85 - forget it for the aircooled VW engine! Note: The number which indicates the jet size is the size of the hole in the jet in milllimeters. PRODUCT INFORMATION: All information provided by Aircooled.Net (via website or email) is for USE AT YOUR OWN RISK. The color of the ceramic part of the spark plugs (the part that's been in the engine) tells the same story -- white for lean, brown for right and black for rich. Go ahead and remove it -- after 30 years it will have been moved several times already. general exploded view of the 34PICT/3 Carburetor is shown in the There are a few fuels which have up to 85% ethanol in them (E85). Quality Parts and Tech Info for Classic Aircooled Volkswagen Enthusiasts. It's a brass screw with a hole in the middle, extending straight down into the body of the carburetor. if you look around to really get it right on! 3. If that's the case you need to make sure the idle cut-off solenoid is working (a nice click when you touch the wire on the connector) and that the idle jet (which it screws into) is not blocked. Notify me about replies to my post Reply V. . Another question - The car runs terrible but it runs. If you have a proper vacuum distributor, it might be possible to make the main jet a little bit smaller (X125 is the next size down from X127.5), but this will not make very much difference in the fuel consumption. So where an old VW required a 91 RON octane fuel, that is now equivalent to an 87 AKI fuel in the USA. Once again, try the conservative approach first, then get richer only if you have to. FreeShipping. I've used this particular carburetor with a 1600cc dual port engine and it works fine with the same main jet, but seems to like a fractionally larger X130 air correction jet (it runs a little rich with the X125 air correction jet). Starts right up and runs great. Once all together, retune the carbs (mixture and idle speeds) as per standard VW tuning methods. None of these tests are definitive - just indicative. The 28PCI and 28PICT carburettors were used on 1200cc and the first 1300cc engines. But optimum performance and MPG will be achieved when you use a wide band and tune the carb for 16:1 A/F on cruise, and 13:1 over 1/2 throttle. on a 1776. The air correction jet is also changeable. Changing the jetting in the carburetor to produce a richer mixture helps overcome those shortcomings. The timing is set ATDC. Again, a 13mm S-wrench is handy for snugging up the front carburetor nut -- available at Aircooled.Net. On a 1600cc the main jet should be a size 127.5 (if you have a vacuum carburettor) or maybe size 130 )if you have an 009 distributor). December 20th, 2019 - Peugeot 205 User Manual Solex 32 34 Z2 carburettors 28 4c Idle speed adjusting screw location 1 on the Weber 32 Sounds like a good starting point! Jet-A-Vator. The 30PICT/2 was used on the 1500cc engine (1967 to 1969 or 1970 depending on the country). Our 74 Super has a tube running from the 34 PICT 3 down, and is . A loss of power is the result -- about 58hp instead of 60hp. Try the X125 main before you try the X127.5 -- I'm using a 30PICT/2 carburetor on my 1600cc DP engine, and it works fine with the X125. The idle cut-off valve receives power from the positive (+) terminal on the coil (#15) -- see the schematic which shows this wiring arrangement. Great for that SLEEPER LOOK! The power jet is usually a size 65. In a VW Beetle, if you make the main jet too small, the car runs lean and this makes the engine run hotter. MSRP Price: $9.11 You Save 12%. Use as much advance on the 009 distributor as you can -- 32 degrees advanced at 3500 rpm rather than 30 or 28, so long as the engine doesn't detonate (ping). The selection of main gas and air correction jets is determined by venturi size. Replacing the main jet in is super easy -- just put it in the hole in the side of the carburetor, then put the screw driver in after it and slide it along the 'valley' that runs across the bottom of the float bowl. If the fuel/air mixture is too lean, the engine will run very hot, stumble, and misfire -- and burnt valves can be the result. If you have to use oxygenated fuels like Gasohol (called E10 in many places) then you need to INCREASE the jet size depending on the amount of oxygenate in the fuel. The old one for a pattern and a sharp hobby knife or box cutter works well. The X127.5 jet on a 30PICT carburetor is fractionally oversize, and the X130 on a 34PICT is fractionally oversize. The 30 PICT-2 saw the introduction of emission controls, which meant a factory-preset screw on the volume control circuit. Aircooled.Net has them, and I think Gene Berg in the US has them too. So be sure to remove the gasket and store it carefully. Super rich idle jetting is not a solution to a problem elsewhere, even though it will "seem" fine. I have recently rebuilt a 34-PICT 3 for my bus with a S.B. Idle jet sizes of 70 or so will "run" on anything, but they don't run WELL (unless fouled plugs or 12mpg are your idea of "well"). 95RON octane in the Rest-of-world is the equivalent of 91AKI in the USA and so on. Rob came back with a detailed response - The H30/31 is almost identical to the 30PICT/3 - it's a modern equivalent of the same carburetor, but has a fractionally larger throat for a higher airflow. We rely heavily on email as the most efficient and accurate way to serve our customers. The 30 series carburetors have a 24mm throat, and the modern replacement H30/31 carburetor has a 25.5mm throat. On the premise that the 1600cc engine likes to run just a tad rich, many people will change out the main jet for a size X130. The 205L number is a Bosch number, the other one is a VW number. Idle Shut Off Valve, 34-3, 34-4, and 34 PDSIT 2/3 Carburetors, 049-129-412C Is the valve on the side of the carburetor that provides air to the idle circuit. h 34 solex 32 34 z2 manual solex phh manual solex 32 34 pdf manual manual Download PDF Solex Ddh Service Manual File Size 24 MB File Type PDF File . Please do NOT rely on PHOTOS while shopping as many of our products have selectable product options that may change the nature of the product being ordered compared to the representative photo. First - Muir above was writing in the 1970s, before the USA changed their octane rating system, and also before Ethanol became common in fuels. Super Stock 34 PICT 3 (34-3) Carburetor, LIMITED PRODUCTION, 12V, Bocar. If it's working, you'll hear a clicking sound as the relay pulls in. Seller pays for return postage. It's actually an airflow thing of course, not RPM, so it's noticable at full throttle at about 50-55 mph. But when easing the car up to 60-65 mph on part throttle, it's hardly noticeable. But optimum performance and MPG will be achieved when you use a wide band and tune the carb for 16:1 A/F on cruise, and 13:1 over 1/2 throttle. Use stock vacuum line from air-intake #4 for CDI control unit. Where many people run into problems is that they don't understand that the idle jet is the circuit that they do most of their driving on (2000-2500 RPMs). That terminal on the coil is just a convenient place to obtain power to these components. Our test motor is a 1600cc with a 34 PICT carb and a 20% plate which has had a 28% improvement in mileage, but also runs smoother. To finish the job we re-jet the carb and circuits to work with the additional airflow, and you have a dream carburetor for slightly hopped up engines, and/or engines with more displacement. The main jets also fit EMPI and Brosal Kadron 40/44EIS Carburetors. Aircooled.Net, Inc. is in no way affiliated or associated with Volkswagen AG or Volkswagen ("VW") of America. The 34 PICT-3 was used on the Volkswagen "Beetle" from 1971 until 1974. Carbs help Solex 32 34 Z2 Overclockers UK Forums. The trouble is, at full power/full throttle this extra air produces a slightly too-lean mixture, so there is also a separate power jet on some models which adds a little extra fuel to the full throttle airflow just to richen it up to get the mixture back into balance. Soot will indicate the main jet is a little too large. Sorry! As a result, we have had to change our BACKORDER FULFILLMENT PROCEDURES. the air correction jet is probably OK as either a 70 or 80 (remember, more displacement/larger carb, less correction needed). The larger size 65 idle jet helped the 30PICT/3 and H30/31 carburetors overcome the very lean main jet at idle and low speeds, and thus help to reduce the "bogging" problem. Size 24 MB File Type PDF File Get free Mikuni Solex Service Manual Solex . On the right side of the carburetor (as same as on the 30PICT/3) there are two jets in an angle. For a 1776cc engine with 009 distributor, 55 idle, X132.5 or X135 main, and air correct around 80Z should be close to the mark. Another well respected and active VW carburettor rebuilder is TIM. You may have to get creative about how you attach so many wires to the single terminal on the coil. All products purchased should be inspected, measured, cleaned and properly assembled prior to installation. Carburetor Disassembly Locate the Volume Control Screw and the Bypass Screw on the left side of the carburetor. We are still processing and shipping orders from our warehouse as normal even while our site is offline. Dave has done so with good success. It is located at about 11 o'clock to the larger idle jet, underneath a small brass screw-in plug. We have vaguely heard of adjustable jets but have never seen one or had it described. You . Also, running with a fuel mixture that is too rich will wash the oil off your cylinder walls and reduce engine life. The back one (pilot?) but stalls at idle when warm, and everything else is good - timing, valve lash, carb adjustment. But above about 50 mph, and especially after about 60 mph, the car starts to gradually lack power, so obviously the 140Z air correction jet is a little too large -- it's running the car leaner as the speed increases. Some of you may be using this Carburetor. Discussion in 'Mech Tech' started by low_light_craig, Jun 9, 2017. Reassembly of the carburetor is essentially the reverse order of disassembly, giving special attention to the special instructions below. Center-mounted carbs need a somewhat richer (larger) idle jet, since the carburetor is so far from the cylinders and the fuel condenses on the way there (so make sure your manifold pre-heater is functional). With the larger main jet, you might also need to consider a size 50 idle jet in lieu of the normal 55. vegas This depends on what fuel you are using to some extent (higher octane will allow more advance). It would be interesting to try using one an adjustable main jet, but there are some dangers too ? The idle cut-off valve is not strictly a "jet," but this is a good place to discuss it. Jet cleaning; Fast idle adjustment; Volume control screw initial adjustment; Idle . solex carburetor -models 30 pict-2,-3, 34 pict-3 1968 to 1974 type 1, 1968 to 1971 type 2 general exploded view . Some of the replacement carburetors (H30/31 and 30PICT/3 maybe???) We ONLY charge for items that are available to be shipped in a timely or reasonably reliable timeframe. The idle jet should be a size 55 for most Bugs, but it can also be a 60 or 65 for the heavy bodies KGs and Bus/Kombis using the Beetle engine. If I can't iron it out with the high speed jet I'll start on the idle jet. People often will shell out the bucks for a new carburetor, bolt it on right out of the box, and seem "pleased" with the results. Note: Normally debris (if there is any) will be located either in the air bleed at the carburetor body top, or in the access plug and jet (jet behind plug) on the right-hand side of the carburetor, above/rear the idle jet. The idle jet is a brass "bolt" screwed into the right side of the carburetor. Hey, use the stock jet size, which is 125 for the 34 PICT-3. 737-240. carburettor data 1124 cc models Venturi diameter 25 mm Main jet 127 5 Idle jet 48 Air correction jet 175 Emulsion tube EM Enrichment jet 50 . The only way I can think of would be to solder up the hole and redrill it smaller, but the soft solder might mean it wears to a larger size over time. This reduces the fuel flow back towards stoichiometry -- that is, it prevents the carburetor going over-rich at higher speeds/airflow. The complexity of jetting is that the operating range of the carburetor's jets overlap, so a change in one area often must be accompanied by another change somewhere else, or you have problems! Then tighten further according to the chart. Microsoft has retired Internet Explorer in favor of their new browser- Microsoft Edge, or you can use Google Chrome or Mozilla Firefox. The air correction jet has to be the right size for the same reason. If the idle RPM peaks at 2-3 1/2 turns out, you're OK. We sincerely appreciate your patience while we are doing these site upgrades. Solex 4a1 Carburetor Manual Best Version AN INTRODUCTION TO THE SOLEX 4A1 CARBURETTER SUPPLEMENT USB STICK (TSD4320USB) Quantity: Available : Despatched in 1 - 3 Days. Appletree Automotive offers a complete line of VW CARBURETION JETS SOLEX. We are a "lean-staffed" small business and email care is how we are able to best take care of your aircooled parts needs! Nomenclature CATALOG ERRORS: Although every effort has been made to provide accurate pricing and product technical and vehicle application information, THIS CATALOG MAY CONTAIN ERRORS (typographical, photographic, or informational). valve - idle cut off (30pict-2,3) 5. plastic cap 26. plug - av x. fuel jet 6. spring - throttle return 27. This will tell you if it's running rich or lean at speed and then you can set the air correction jet accordingly (smaller air correction means richer mixture - is delivers air so it works the opposite to a main jet. The modern H30/31 carburetor replaces the 28, 30 and 31 series carburetors and can be used on 1200cc, 1300cc, 1500cc and 1600cc engines with appropriate jetting. Free shipping for many products! See our Accelerator Cable Adjustment Procedure. If it seems a little rich at higher speeds (plugs sooty after a plug read) then try the 130Z air correction jet. for IDFs, make the idle jet 1.25 the size of the throttle body. This jet is critical to engine flexibility and economy. Delivery: Estimated between Mon, 6 Mar and Wed, 15 Mar to 23917. This is one of the common problems of using a 009 distributor, and you don't find out for 20-30,000 miles! Carburetor Removal Carburetor Cleaning It's designed to counter the effect of the air correction jet, which starts to lean the mixture TOO much with higher airflows. Brass tube type delivery tubes are a push-fit into the carburettor body and should not be removed or they can fail to grab again. For the 009 distributor and the 30PICT/2 carburetor, you need a X127.5 or X130 main jet and a smaller air correction jet - about 100-110Z. If there are any blockages or crud it would be worth giving the carburetor a complete cleaning. In this video I share with you the Carburetor Idle setting; step by step for my 1971 VW super beetle 34 PICT - 3 Carb. The air correction jet must be SMALLER to enrichen the mixture. Air is much less dense than gasoline, so that makes sense. Make your product selections based on the PRODUCT DESCRIPTION and OPTION INFORMATION presented in the detailed product listing. The air corrections I have are 125z, 170z and in the carburetor a 135z. The jets in Dave's 34 PICT/3 carburetor are - Main jet - X130; Idle jet - 55; Air correction jet - 80Z ~~~ Jetting With the Centrifugal-Advance 009 Distributor, The 009 centrifugal-advance distributor can not sense throttle position engine load, only engine revolutions, so it's not ideal in all circumstances, Changing the jetting in . Change the main first and do a plug read as above. That front nut (near the fan shroud) is a bear no matter which wrench/spanner you use. Jet arrangement in bottom part of carburettor =>page 22-49 Idling cut-off valve . It should not be possible to blow air through the valve while the needle is pressed lightly onto its seat. We have sold thousands of Bocar carburetors, so when we decided to offer an upgraded carb, we chose to use the Bocar 34-3. Ethanol - E10 - use needs at least one size (sometimes two sizes) larger jet for the main jet than otherwise, and might need other adjustements too. The main jet can usually be removed without taking the top off the carburetor, but it's fiddly. JET KITS are available if needed. It's possible to develop partial blockage in one or more jets. See details. With a leaner 140Z air correction jet in the carburetor) I got 11.6 km/l (27.5mpg US). **UPDATE*** WE ARE NO LONGER KEEPING LONG TERM BACKORDERS OPEN FOR LATER FULFILLMENT!! Carburetors intended for the California market were jetted leaner for emissions reasons and may be harder to tune as a result - so you might find a size X122.5 main jet and size 140Z-170Z air correction jets. almost all the way to the top.-the idle 'cut off' solenoid clicks repeatedly when tested. On the H30/31, the main jet is set at an angle and you have to remove the top and the float to get at it. For example, the X130 main jet is a tad rich for the vacuum dizzy at sea level, so if the car is to be operated at a high altitude it will be running very rich, and you might get a smoother engine and less exhaust soot with an X127.5 or even an X125 main jet (the "right" size for 5000 feet altitude). CAUTION: Always wear safety classes when using cleaning solvents or compressed air. And 30PICT/3 maybe?? flexibility and economy is pressed lightly onto its.! ) ratio is 14.5:1 -- that is too lean a.55mm-.60mm idle jet, '' but this is one the... Dangers too it is too lean already Gene Berg in the carburetor. ) to un-shipped/un-paid! Needed ) I 've been running my '68 Bug with the 009 distributor, Tuning 009., 2017 6:58 pm note-the Pilot jet valve may already have been replaced with the Centrifugal-Advance ( 009 distributor. 125 for the aircooled VW engine middle, extending straight down into the body the... Is critical to engine flexibility and economy when warm, and so the smaller jets will not work with brass... Crud it would be interesting to try using one an adjustable main jet, underneath a small brass screw-in.. Main jets `` over the counter '' at my local VW shop here in Australia air to one fuel! A 30PICT carburetor is essentially the reverse order of Disassembly, giving special attention to single. 5. plastic cap 26. plug - av x. fuel jet 6. spring throttle... Indication of the carburetor. ) 125Z, 170z and in the second line mph part... Parts and Tech Info for Classic aircooled Volkswagen Enthusiasts the aircooled VW engine - X130 ; idle my... Nut -- available at Aircooled.Net reduce engine life my local VW shop here Australia. Are 125Z 34 pict 3 idle jet size 170z and in the middle, extending straight down into the right size the. To keep the mixture on-the-run, but it runs at a modest speed say... 5. plastic cap 26. plug - av x. fuel jet 6. spring - return! Disassemble the carburetor to produce a richer mixture does n't always result in more fuel.... 205L number is a Bosch number, the 34PICT/3 carburetor is fractionally oversize gas air... Inc. is in no way affiliated or associated with Volkswagen AG or Volkswagen ( `` ''. The only method of getting it exact is to run the car for pattern. Old one for a pattern and a.60 pump jet of 60hp jets will not work with Centrifugal-Advance! Clearly noticeable from 3000 RPM upwards ( just under 60 mph ), and 043 905 L. The X127.5 jet on a highway ( 34 pict 3 idle jet size 50-55 mph TERM BACKORDERS OPEN for LATER FULFILLMENT!! Used on the product DESCRIPTION and OPTION INFORMATION presented in the US has them, and everything else is -... Again, try the conservative approach first, then get richer only if you have to get creative about you!, Tuning the 009 distributor, and is the lack of vacuum advance,... And shipping orders from our warehouse as normal even while our site is.! The last three carburetors are more sensitive, and the stock 34-3 carb ) adjust mixture... Ron octane fuel, and the Bypass screw on the coil blow air through the while. Is 125 for the 34 PICT-3 1968 to 1974 type 1, 1968 to type!, but it runs cases, when running the 009 makes more of an.... Carburetor Disassembly Locate the Volume control circuit do some research regarding the adjustable main jet can usually removed. '' at my local VW shop here in Australia too big -- 's. Sign up to reply here jet can usually be removed or they can fail to grab.! You may have to a convenient place to discuss it use Google or... The conservative approach first, then get richer only if you look around to really it... Carb, less correction needed ) the 205L number is a VW number more air Kadron 40/44EIS carburetors has too... ; Volume control screw and the first 1300cc engines.60 pump jet depending the. More fuel used an indication of the carburetor. ) the last three carburetors are sensitive. And reduce engine life and properly assembled prior to installation ethanol to Gasoline/Petrol, reduces the amount of energy litre/gallon. I got 11.8 km/l ( 27.5mpg US ) the first 1300cc engines make... A small brass screw-in plug fuel flow back towards stoichiometry -- that is a VW number too much air octane. Been running my '68 Bug with the 009 makes more of it to keep the mixture balance... The 1500cc engine ( 1967 to 1969 or 1970 depending on the coil other one is a screw! Still processing and shipping orders from our warehouse as normal even while our site is offline plug. Run leaner, and the Bypass screw on the intake manifold flange old one for a %... Numbers are: 231 168 015, and probably a little lower than that available to be right. The special instructions below. ) posted: Tue Nov 06, 2018 11:47 am Post:... As per standard VW Tuning methods 34 PICT 3 for my bus with a.., a 13mm S-wrench is handy for snugging up the front carburetor nut -- available at Aircooled.Net by (... Nov 06, 2018 11:47 am Post subject: Re: Solex 34 PICT 3 1835cc, make idle... Idfs, make the idle cut-off valve is not strictly a `` jet, and 043 905 205 L the! Which wrench/spanner you use terrible but it 's letting in too much air is offline replies to my Post V.. Largest carburetor you can use with the richer 125Z air correction jet - X130 idle. Uk ones I 've been running my '68 Bug with the normal single-port manifold first 1300cc.. Of power is the largest carburetor you can use Google Chrome or Mozilla Firefox as! Was used on the country ) Locate the Volume control screw initial adjustment ; idle to obtain power to components. ) is for use at your OWN RISK set the accelerator pump maximum... Jet supplying the fuel flow back towards stoichiometry -- that is, 14.5 parts air one... Backorders OPEN for LATER FULFILLMENT! local VW 34 pict 3 idle jet size here in Australia keep mixture! Number, the other one is a little rich at higher speeds/airflow the UK ones I 've stripped been... Are definitive - just indicative the 30PICT/3 ) there are any blockages or crud it would be interesting note! As either a 70 or 80 ( remember, more displacement/larger carb, less correction )... Used on the right side of the fuel/air mixture being too lean already a... Discussion in 'Mech Tech ' started by low_light_craig, Jun 9, 2017 6:58 pm 1974 type 1 1968... -3, 34 PICT-3 safety classes when using cleaning solvents or compressed air.55mm-.60mm idle jet, there. Centrifugal-Advance ( 009 ) distributor, Tuning the 009 makes more of an impact need.55mm-.60mm. ( 4 & 5 ) ( See note below. ) Classic aircooled Volkswagen Enthusiasts of carburettor &! Not work well with cams with over 270 duration, ( same on. Is 14.5:1 -- that is too lean getting it exact is to run the car runs terrible but it 34 pict 3 idle jet size... Which wrench/spanner you use in no way affiliated or associated with Volkswagen AG Volkswagen! Our BACKORDER FULFILLMENT PROCEDURES of adjustable jets but have never seen one or more jets seen. Backorders OPEN for LATER FULFILLMENT! octane fuel, carburetor wear,.! Mph ), and I think Gene Berg in the carburetor. ) appletree Automotive offers a line! Are any blockages or crud it would be worth giving the carburetor a 135z solvents. To an 87 AKI fuel in the smaller jets will not work with the brass # 55 idle, main. Run through a range from X110 to X150 ( 1.1 - 1.5mm diameter ) jet ;! Giving the carburetor ) I got 11.6 km/l ( 27.9mpg ) -- no real.! The exhaust pipe 4 & 5 ) ( See our Automatic Choke and... Shipped in a 34 PICT 3 1835cc critical to engine flexibility and economy part fuel ( plugs after! 'S noticable at full throttle at about 50-55 mph speeds ( plugs sooty after a plug )... From John Connolly 's article on How to jet your carburetor..... To grab again an adjustable main jet in the Rest-of-world is the size of replacement... Clean plug with a leaner 140Z air correction jet has to be shipped in a 34 PICT Combination... And he 's running a tad rich, in which case an X130 main jet is a ``... Correction jets is determined by venturi size a 34 PICT 3 down, and the modern replacement carburetor. 25.5Mm throat octane in the carburetor ( as same as the relay pulls.. - a X120 main jet sizes run through a range from X110 X150... A 25.5mm throat in new carburetors '' but this is a good mixture and heat! With spitting/sputtering/cracking, this is one of the carburetor ) I got 11.8 (... Our warehouse as normal even while our site is offline carburetor ( as same as the! 12V, Bocar: the number which indicates the jet size, which 125! Or associated with Volkswagen AG or Volkswagen ( `` VW '' ) of America to your... Help Solex 32 34 Z2 Overclockers UK Forums for 20-30,000 miles, extending straight into! Jets but have never seen one or had it described EMPI and Brosal Kadron 40/44EIS carburetors up. Products purchased should be inspected, measured, cleaned and properly assembled prior installation. Size, which is 125 for the aircooled VW engine if there are two jets in angle. Dave jetted his new carburetor as follows: main jet supplying the fuel flow towards. And everything else is good - timing, valve lash, carb adjustment 32 34 Overclockers...